I.regist('util.UUID',function(W,D){
var _next=function(){
 return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g,function(c){
  var r=Math.random()*16|0,v=c=='x'?r:(r&0x3|0x8);
  return v.toString(16);
 });
};
return{
 next:function(){
  return _next();
 }
};
}+'');